Slitting machine



April 30, 1957 P. HEYGEL ET AL SLITTING MACHINE 5 Sheets-Sheet 1Original Filed Dec. 22, 1949 w 1 Q, 1 a y 2 4. 1 4

PAUL R. ME V651 AND ERMEJT 6'. KALTE/VBACIL BY P wn: Rm j nlllJ f'ig. .5

ITTOR/YEKS April 30, 1957 P. R. HEYGEL ET AL SLITTING MACHINE Ori ginalFiled Dec. 22, 1949 5 Sheet-Sheet 2 INVENTORS 0 PAUL R #477651. AND 9ERA/57 a. Imus/mac April 30, 1957 P- R. HEYGEL ET AL SLITTING MACHINEOriginal Filed Dec. 22, 1949 5 Sheets-Sheet 5 INVENTORS P404 1?. 051051. mvo [RA/87 6. MM rims/raw PMwk t Q19) April 30, 1957 P. R. HEYGELET 'AL SLITTING MACHINE Original Filed Dec. 22, 1949 5 Sheets-Sheet 4 On%Q VII W nu om an N v. NM Hum TORS P401. 12 HYGL AND Arron/Mrs ERNEST 6.KALTE/YBACW April 30, 1957 P. R. HEYGEL ET AL 2,790,497

SLITTING'MACHINE Original Filed Dec. 22, 1949 5 Sh eets-Sheet'5 IN V ENTORS P401. R. IIKVGEL All/D ERNEST G IOMTENBACH FWL A TTORIYEVJ UnitedStates atent O SLITTING MACHINE Paul R. Heygel, Asheville, and Ernest G.Kalte'nbach, Pisgah Forest, J. C., assignors, by mesne assignments, to01in Mathieson Chemical Corporation, a corporation of Virginia Originalapplication December 22, 1949, Serial No. 134,574, now Patent No.2,711,861, dated June 28, 1955. Divided and this'applicatio'n August 30,1954, Serial No. 456,172

7 Claims. (Cl. 164-65) This invention relates particularly to slittingmachines such as are used to slit paper webs and the like into aplurality of smaller web portions. The improved slitting machinefeatures provided according to the present invention may also in generalbe employed to advantage in other types of web processing equipment aswill appear more in detail below.

This is a division of our copending application Serial No. 134,574,filed December 22, 1949, now U. S. Patent No. 2,711,861.

One of the principal difficulties encountered in processing webmaterial, especially. when slitting of a paper web is involved, is theproblem of maintainingadequate lateral alignment of the variousoperating elements so that the web material may be run smoothly andevenly from each operating element-to the-next one. In the processing ofa web ofcigarette paper, for example, to slit the web and rewind theslit web portions into bobbins for use in acigarette making machine, itis necessary to rewind the bobbins very exactly in order to form themstraight and true enough for satisfactory use on the cigarette makingmachine, and this cannot be done unless the lateral alignment of theslitting machine operating elements can be maintained very closely. Thisproblem is made further difficult by the fact that some of the operatingelements, such as the core shafts, must be arranged in the machinesothatthey are removable which precludes the use of any permanently fixedmounting arrangement.

According to the present invention these difficulties are overcome inaparticu-larlyeffective mannerby providing lateral locating means ordevices for each of the operating elements whichare characterized ingeneral by the factthat they maintain the lateral alignment solely withrespect to one side of the machine frame. By this arrangement, therelative lateral alignment ofthe operating elements can beset andmaintained with great accuracy, because the alignment of each-element isdetermined at only one point ratherthanat spaced'points, and thisarrangement-is-further exceptionally Well adapted for locating theremovable operatingelements with ease and facility.

Another important-feature of--the present-invention is the provisionofanauxiliary rewind roll-which makes it possible to rewind the slitwebportienson opposed core shafts in alternating. sets of bobbins; allwound in the same direction. This featurenot only results-informing allofthe bobbins-uniformly with one side of the paper i. e., wire side-ortop side) disposed outwardly, but also improves the operation of the.slitting. knives.

These and otherfeatures of the present invention are described infurther detail below in connection with the accompanying drawing, inwhich:

Fig. 1 is a side elevation of a slitting machine embodying the presentinvention;

Fig. 2. is a further side elevation from the opposite side as comparedwith Fig. 1;

2,790,497 Patented Apr. 30, 1957 Fig. 3 is an end elevation from theright as seen in Fig. 2;

Fig. 4 isa. central vertical section corresponding generally to Fig. 1;

Fig. 5 is an enlarged sectional detail taken substantially on the line5-5 in Fig. 1, and illustrating the arrangement of the slitting knivesand the auxiliary rewind roll;

Fig. 6 is an enlarged sectional detail taken substantially on the line66 in Fig. l, and illustrating the arrangement of the core shafts andthe pivoted core shaft supporting arms;

Fig. 7 is an enlarged detail taken substantially on the line 7-7 in Fig.3, and consisting essentially of a side elevation of the left pivotedsupporting arm for the rear core shaft as seen in Fig. 3;

Fig. 8 is a similar enlarged detail of the right pivoted supporting armfor the rear core shaft as seen in Fig. 3;

Fig. 9 is an enlarged horizontal section of the'supply roll core shaftarrangement, as seen in Fig. 2; and

Fig. 10 is a fragmentary detail taken substantially on the line 1010 inFig. 9.

The slitting machine shown in the drawing is of a generally conventionaltype in which a machine frame 10 is arranged to. support a core shaft 12for a supply roll R from whicha web W may betrained through the machine,as over guide rolls at 14, and 18, for slitting into smaller webportions and rewinding. into bobbins as at B and B. The improvedarrangements of the operating elements provided by the present inventionmay be illustrated conveniently inrelation to a slitting machine of thistype, although, as mentioned above, these arrangements may also beemployed in other types of web processing equipment, if desired.

According to the present invention, the core shafts 20 and 22, providedfor rewinding the bobbins B and B, and which constitute operatingelements that must be removable, are provided with specially arrangedlocating devices for'maintaining the bobbins in accurate alignment inthe machine so that they will be wound straight and true during theslitting operation. The arrangement of the'core'shafts in'this manner isshown best in-Fig. 6 of the drawing, in which an enlarged detail of thecore shaft 20 is illustrated, and which corresponds exactly with thearrangement of the core shaft 22. As shown in Fig. 6, the core shaft 20suitably comprises a cylindrical shell member 24; of suitableproportions for carrying the paper cores'or liners P oniwhich thebobbins B andB' are received during rewinding, and which are commonlypositioned by intermediate spacers as at S.

The core shaft shell member 24 is fitted at each end with plug. members26 formed to extend at each end of thecore shaft 20 so as to providejournal portions'as at 28 and 30. Adjacent each of the shell members 24these plug members are also formed with a threaded portion as at 32 toreceive a retaining plate 34' and a nut element 36 by which the papercores P and spacers S may be'clamped' in position on the core shaft 20;The retaining plates 34 arealso'prefera'bly fitted with extending pinsor dowels 38 disposed to be slidingly received in apertures 40formed inthe core shaft shell'member 24 so that'any turning movement of theretaining. plates 34 with respect to the shell member 2415 prevented andloosening of the nut elements 36 during the slitting operation isthereby avoided.

Theabove noted journal portions 28 and 30 of the core shaft 20 are eachfitted with double flanged rotatable'sleeve or collar units as at 42 and44; The sleeve unit 42 is fixedper'manently in place" on'the journalportion 28, as will be-pointed out more in" detail" presently,

while the other sleeve unit" 44 is fitted with a: spring Ii pressed ballmember as at 46, or other similar yieldable means, adapted to engage acircumferential groove as at 48 in the journal portion 30 and therebyprovide for mounting and removal of the sleeve unit 44 at this end ofthe core shaft 20 as desired. The sleeve unit 44 is made removable inthis manner so as to facilitate mounting of the paper cores P andremoval of the rewound bobbins B from the core shaft 20 as necessary.

These rotatable sleeve units 42 and 44 are arranged on the journalportions 28 and 30 with a lateral spacing in relation to the core shaft20 adapting them for disposition on pivoted supporting arms 50 and 52carried by the machine frame 10. These supporting arms 50 and 52 arebifurcated 'at their extending ends as at 54 and 56, such as is usual inslitting machines of this type, to receive the core shaft 20, and therotatable sleeve units 42 and 44 are adapted for disposition in thesebifurcated ends 50 and 52 as journal bearings for the core shaft 20.

It has already been noted above that the rotatable sleeve unit 42 isfixed permanently on the journal portion 28. This permanently fixeddisposition of the sleeve unit 42 is used for locating and aligning thecore shaft with respect to the frame structure of the slitting machine.The rotatable sleeve unit 42 is permanently fixed on the journal portion28 by seating it against a shoulder formed at 58 on the journal portion28 and containing it against this shoulder by a collar 60. which ispinned on the journal portion as at 62. This containing collar 60 isfurther fitted with a thrust bearing unit 64 so as to allow for rotationof the sleeve unit 42 under the containing pressure of the collar member60. The extending end of the journal portion 28 is further fitted with acentrally disposed pin element 66, which is preferably formed with aknurled tip as at 66', and which is provided to receive the locatingpressure on the core shaft for positioning a flange portion of thesleeve unit 42 against the supporting arm 50 as at 68 to locate the coreshaft 20 with respect to the machine frame 10, as previously mentioned.

The locating or positioning pressure is exerted on the core shaft 20through the pin element 66 by a locating device carried on thesupporting arm 50, which comprises a swinging arm 70 mounted on a pivotrod 72 extending from the supporting arm 50. The swinging arm 70 isbraced by a second rod 74, which is also mounted on the supporting arm50, and which is fitted with an extending lip at 76 to accommodateswinging movement of the above mentioned swing-ing arm 70, and furtherto act as 'a rest for the arm 70 when the locating device is disengagedfrom the core shaft 20. The free end of the swinging arm 70 is fittedwith a sliding plug unit 78, which is assembled with a threaded stem 80that engages and extends through a positioning cap 82 to carry anadjusting handle at 84 and a loclcnut at 86. The other end of the plugunit 78 is joined through a universal joint as at 88 to a positioningnose 90, which is fitted with a thrust bearing unit 92 having a centralaperture in its outer face that may also be suitably knurled to engagethe knurled tip 66 of the pin element 66 disposed at the end of thejournal portion 28 of the core shaft 20.

This arrangement allows the positioning nose 90 to be adjusted againstthe pin element 66 by manipulation of the adjusting handle 84 to exertthe necessary locating pressure on the end of the core shaft 20, andwhen this locating pressure has been properly adjusted, the adjustmentmay be fixed by the locknut 86. The positioning nose 90 is connected tothe plug unit 78 by the universal joint 88 to allow the positioning nose90 freedom for finding a proper fit with the pin element 66 at the endof the core shaft 20, and so that any minor misalignment of the locatingdevice with the core shaft 20 will not affect the smooth running of thecore shaft 20. In

order to maintain the positioning nose in general position for findingthe pin element at the end of the core shaft 20, a guiding cup 94' isfitted on the swinging arm 70 in loosely surrounding relation to thepositioning nose 90 as shown in Fig. 6. i

The pivoted supporting arms 50 and 52 as already noted have bifurcatedextending ends 54 and 56 for supporting the core shaft 20, as is usualin slitting machines of this type, and these pivoted supporting armsform floating support means as is also usual in such slitting machinesto allow the displacement necessary for accommodating the increasingdiameter of the bobbins B and B as they build up on the core shafts 20and 22 during the slitting operation. The pivoted supporting arms 50 and52, however, are uniquely formed according to the present invention formounting on the machine frame 10. As is shown at Fig. 6, both of thepivoted supporting arms 50 and 52 flare outwardly at their pivoted endsto a hub portion 96, which is formed to straddle the frame structure 10,and which is fitted at each end with ball bearing units 98 for mountingson a pivot shaft 100 carried by the frame structure 10. As will be seen,this arrangement of the hub portion 50 allows a relatively wide spacingof the bearing units 98 and thereby provides exceptional strength forthe supporting arms 50 and 52 against lateral stresses.

It is further important to impose a drag on the pivoting movement ofthese supporting arms 50 and 52 in order to prevent chattering of thecore shafts during the slitting operation. The supporting arms arenormally weighted during the slitting operation by cords 102 running toa hanging weight 104, as shown in Fig. l, but it is still necessary toimpose a drag at the point of pivoting of these arms in order to obtainfully satisfactory operation. This is done according to the present invention by arranging friction elements, such as disks of frictionmaterial as at 106 and 108, on the supporting arm pivot shaft 100adjacent the hub portion 96, and providing means assembled on thepivoting shaft 100 for applying the friction elements 106 and 108 to thehub portion 96 and thereby imposing the necessary drag on the pivotingmovement of the supporting arms 50 and 52.

The means employed for applying these friction elements 106 and 108suitably comprises an externally threaded collar 110 fixed on the pivotshaft 100 as by set screws 112, and carrying at least two internallythreaded collars 114 and 116 on its threaded surface. The fixed threadedcollar 110 is further formed with a keyway as at 118 in its threadedsurface, and carries a Washer element 120 which is formed with a lug asat 120 for engaging the keyway 118. By this arrangement, the washer 120is prevented from turning with respect to the collar 110, and byinterposing this washer 120 between the internally threaded collars 114and 116 carried on the collar 110, the friction elements 106 and 108 canbe applied to the hub portion 96 with the desired pressure and locked inplace effectively.

As indicated in Fig. 6, this arrangement for imposing a drag on pivotingmovement of the supporting arms is exactly the same for each of thesupporting arms 50 and 52. Also, the pivoted supporting arms areprovided in corresponding pairs 50 and 52 for each of the core shafts 20and 22, and these pairs of pivoted supporting arms 50 and 52 are mountedon exactly similar pivot shafts 100, which in turn are carried by themachine frame 10 in exactly the same manner with the single exceptionthat the machine frame 10 is fitted according to the present inventionwith extension brackets 122 to carry one of these pivoting shafts 100.These extension brackets may be provided for carrying either of thepivoting shafts 100 as desired. In the drawings, they are shown providedfor the pivot shaft carrying the supporting arms for the core shaft 22.

ma aw The purpose of providing these extension brackets 122 on themachine frame is to arrange one of the pivot shafts 100 to carry a pairof the supporting arms 50 and 52 so as to support one of the coreshafts, as 22, in relation to an auxiliary rewind roll 124, asillustrated in Figs. 1 to 5 inclusive. Normally, in a slitting machineof this type, the bobbins B and B are rewound through peripheral contactwith the slitting knife shafts 126 and 123, just as the bobbins B, beingrewound on the core shaft 20, are shown resting on the knife shaft 126.

According to the usual and conventional arrangement these slitting knifeshafts are arranged, as indicated best in Fig. 5, with a mandrel body130 carrying spacing collars 132 on which circular slitting knives aremounted as at 134. The mandrel body 130 is formed with a keyway as at130' so that the spacing collars 132 and the slitting knives 134 whichthey carry may be keyed for rotation with the knife shaft but stillremain free for lateral sliding movement. At one end of the mandrel body130, a fixed retaining collar 136 is provided, and at the other end apair of retaining collars 138 and 140 are arranged. Of this pair ofretaining collars, one of the collars 138 is fixed to the mandrel body130, while the other collar 140 is laterally slidable, and annularlyspaced spring elements 142 are arranged between these two collarelements so as to provide yieldable positioning pressure on the spacingcollars and thereby allow them to find their proper running positionwhen the two knife shafts 126 and 128 are disposed in the machine frame10 with the circular slitting knives 134 on the two knife shafts 126 and128 positioned alternately for coaction during the slitting operation,as indicated by dotted lines in Fig. 5.

As will be seen, the peripheral surface of the spacing collars 132 andthe slitting knives 134 which they carry provide a supporting surfacefor the bobbins on shaft 20 that are being rewound after the slittingoperation, and as previously mentioned it is usual practice to rewindthe bobbins by peripheral contact with these spacing collars andslitting knives. The slitting knife shafts 126 and 128, however, must begeared to run together during the slittin operation, and as a resultwhen the bobbins are rewound byperipheral contact with the knife shaftsthey are of necessity rewound in opposite directions, which means thatopposite sides of the sheet material being processed will be disposedoutwardly on the two sets of bobbins obtained. For example, if the sheetmaterial being processed is paper, the top side of the sheet will bedisposed outwardly on one set of bobbins while it will be the wire sidethat is disposed outwardly on the other set of bobbins. It is oftenimportant to avoid this result in rewinding the bobbins in order toobtain fully uniform bobbins for subsequent processing operations. Wherea web of cigarette paper, for instance, is being slit and rewound intobobbins intended for use on cigarette making machines, the bobbins canbe handled to much better advantage in the cigarette making ma chines ifone side of the paper is uniformly disposed outwardly on the bobbins.

This result is obtained according to the present invention by employingthe above mentioned auxiliary rewind roll 124 which is mounted on themachine frame 10 by a. bracket structure as at 144 to support thebobbins B carried by the core shaft 22 and lead the slit paper webs romthe knife shaft 128 onto these bobbins B for rewinding in the samedirection as the bobbins B being rewound through peripheral contact withthe knife shaft 126. The auxiliary rewind roll 124 is fitted with a gear146 which meshes with the gear 128 on the knife shaft 128 so that it isdriven at the same peripheral speed.

Also, it will be noted from Fig. 5 that the auxiliary rewind roll 124 isspaced slightly from the knife shaft 123, which provides the furtheradvantage of relieving the spacing collars 132 and the slitting knives134 on the knife shaft 128 of the pressure resulting from sup portingthe bobbins B during the rewinding operation, and thereby leaves thespacing collars 132 free'to'shift laterally on the mandrel body of theknife shaft 128 to find their proper running position with the knife 134carried by the other knife shaft 126.

It should also be noted that both of these knife shafts 126 and 128, aswell as the auxiliary rewind roll 124, are mounted so that they too arealigned from only 'one side of the machine frame 10. The knife shafts126 and 128, and the auxiliary rewind roll 124, do not require aremovable mounting, as do the core shafts 20 and 22, so that they areassembled in fixed relation with the machine frame 10. As shown in Fig.5, the mounting arrangements for these elements comprise bearing units148 and 150 arranged at one side of the machine frame 10 with clearancefor lateral shifting. In the case of the knife shaft 128 (or the knifeshaft 126), the bearing assembly 148 comprises ball bearing units 152assembled on the end of the knife shaft 128 by a cap 154. The outerraces of these ball bearing units 152 are in turn supported in a bore asat 156 provided in the machine frame 10. In the case of the auxiliaryrewind roll 124 a similar ball bearing unit 158 is assembled at the endof the shaft by a cap 160 and arranged in a bore 162 formed'in thepreviously mentioned bracket structure 144.

At the other end of the knife shaft 128 (or 126), a double thrustbearing unit, such as the TIMKEN type arrangement broadly illustrated as164, is seated against a shoulder 166 and held in place by locknuts asat 168. Bearing 164 has component parts outer race 213, inner race 214and rollers 215 held in place by roller cages 216. This TIMKEN typebearing unit 164 is also disposed in a bore 170 provided in the machineframe 10, but this bore 170 is further fitted with positioning caps 172and 174 which engage the outer race of the bearing unit 164 to fix itaccurately at a desired alignment for the knife shaft 128 in the machineframe 10. The arrangement for the auxiliary rewind roll 124 is generallysimilar although it is not usually necessary to provide any specialthrust support for this roll, and an ordinary ball bearing unit 176 mayaccordingly be used at this end of the shaft too. Here again the bearingunit 176 is seated against a shoulder 178 and held in place by a nut180, while the outer race of the bearing unit 176 is positioned in abore 182 with which positioning caps 184 and 186 are used to fix thebearing unit 176 in place. i

The alignment of all the operating elements of the slitting machine ofthe present invention form'one side of the machine frame 10 is furthercarried out in the mounting arrangement for the supply roll R. Aspreviously noted, this supply roll R is carried by a core shaft 12, andthis core shaft 12 may be fitted, as is common, with a brake drum 188for action with an adjustable braking means as at 190 to impose propertension on the web being withdrawn from the supply roll R, and toprevent the supply roll R from over-running whenever it is necessary toshut down the machine during the slitting operation. The supply rollcore shaft 12 is formed with keyways as at 192 so that the brake drum188 may be fixed in place as indicated at 194 in Fig. 9, and also toprovide for receiving laterally slidable double flanged rotatablecollars or sleeves 196 at each end of the core shaft 12 that are adaptedfor disposition in the machine frame 10 as journal supports for the coreshaft. At one end the core shaft 12 is also fitted with a rotatablecollar 198 which is seated against a shoulder 200 and secured in placeby a locknut 202. A positioning arm 204 which is pivoted on the machineframe is arranged to engage the bearing collar 198 as illustrated inFig. 10. This positioning arm 204 is carried on a pivot stud 206 whichis mounted for lateral sliding adjustment in a bore 208 provided in themachine frame 10, by means of a screw stem 210 which is fitted with amanipulating handle at 212. As the rotatable collar 198 is fixed on thecore shaft 12, lateral adjustment of the positioning arm 204 will resulti I were 7 in aligning the supply roll R in machine frame 10, asdesired, in relation to the knife shafts 126 and 128, the auxiliaryrewind roll 124, and the core shafts 20 and 22, which may all be alignedon the machine frame 10 with similar accuracy and facility according tothe present in vention as previously pointed out.

We claim:

1. In a slitting machine, the combination with a machine frameincorporating opposed pairs of pivoted supporting arms forming floatingsupport means for core shafts provided for receiving web portions sliton said machine and rewinding said web portions into alternating sets ofbobbins, of an auxiliary rewind roll carried by said machine frame forone of said core shafts, said auxiliary rewind roll being driven in adirection resulting in rotation of the core shaft for which it isprovided in the same direction as the other core shaft.

2. In a slitting machine, the combination with a machine frameincorporating opposed pairs of pivoted supporting arms forming floatingsupport means for core shafts provided for rewinding web portions sliton said machine, and carrying opposed knife rolls for slitting said webinto portions, of an auxiliary rewind roll carried by said machine framefor peripheral contact with one of said core shafts, said auxiliaryrewind roll being driven in a direction resulting in rotation of thecore shaft for which it is provided in the same direction as the othercore shaft is rotated through normal peripheral contact with one of saidknife rolls.

3. In a slitting machine, the combination with a machine frameincorporating opposed pairs of pivoted supporting arms forming floatingsupport means for core shafts provided for rewinding into 'aiternatingsets of bobbins web portions slit on said machine, and carrying opposedknife rolls each fitted with a gear meshing with the other for drivingsaid rolls to slit said web into portions, of an auxiliary rewind rollcarried by said machine frame for peripheral contact with bobbins beingrewound on one of said core shafts, said auxiliary rewind roll alsobeing fitted with a gear meshing with the gear on one of said kniferolls, whereby said rewind roll is driven in a direction resulting inrotation of the core shaft with which it is associated in the samedirection as the other core shaft is rotated through normal peripheralcontact of the bobbins being rewound on this core shaft with the otherof said knife rolls.

4. In a slitting machine, the combination with a machine frameincorporating means for supporting bobbins while they are being formedby rewinding web portions slit on said machine, and carrying means forslitting said web into portions, of a core shaft for a web supply roll,said core shaft being fitted with laterally slidable and rotatablesleeves adjacent each end adapted for disposition on said machine frameas journal bearings for said core shaft, and said core shaft beingfurther fitted with a fixed rotatable collar, and laterally adjustablelocating means 8 disposed on said machine frame for engaging saidrotatable collar and thereby laterally locating said core shaft on saidmachine frame.

5. In a slitting machine, the combination with a machine frameincorporating means for supporting bobbins while they are being formedby rewinding web portions slit on said machine, means for slitting saidweb into portions, and means for supporting a web supply roll, oflateral locating devices disposed on said machine frame for aligning allof said means solely with respect to one side of said machine frame.

6. In a slitting machine, the combination with a machine frameincorporating means for supporting a web supply roll, means for slittinga web withdrawn from said roll support means into portions for formingbobbins, and means for supporting bobbins while they are being formed byrewinding said slit web portions, of adjusting means associated withsaid bobbin support means for lateral positioning thereof, and laterallyadjustable locating means disposed on said machine frame for positioningsaid roll support means, whereby said bobbin support and said rollsupport means may be aligned on said machine frame for assuring accuraterewinding of said bobbins.

7. In a slitting machine, the combination with a machine frameincorporating movable means for supporting bobbins while they are beingformed by rewinding web portions slit on said machine, and carryingmeans for slitting said web into portions, of adjusting means associatedwith said means for supporting said bobbin for lateral positioningthereof, friction elements associated with said movable bobbin supportmeans for governing the rate of movement thereof, an auxiliary rewindroll carried by said frame for causing all of said bobbins to be woundin the same direction, a core shaft for a web supply roll adapted to bemounted on said frame, said core shaft being fitted with a fixedrotatable collar, and laterally adjustable locating means disposed onsaid machine frame for engaging said rotatable collar whereby saidmovable means for supporting bobbins, said auxiliary rewind roll, andsaid web supply roll may be aligned on said machine frame for assuringaccurate rewinding of said bobbins.

References Cited in the file of this patent UNITED STATES PATENTS929,876 Pulsifer Aug. 3, 1909 1,021,028 Wescott Mar. 26, 1912 j1,515,382 Cheesman Nov. 11, 1924 1,948,385 Lentz Feb. 20, 1934 1,963,179Stacey June 19, 1934 2,086,476 Quick et al. July 6, 1937 2,221,176 BollNov. 12, 1940 2,282,909 Thiersch et al May 12, 1942 2,414,739 HeygelJan. 21, 1947 FOREIGN PATENTS 108,893 Germany Mar. 9, 1900

